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merger_sorted_index_test.rs
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merger_sorted_index_test.rs
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#[cfg(test)]
mod tests {
use crate::collector::TopDocs;
use crate::core::Index;
use crate::fastfield::MultiValuedFastFieldReader;
use crate::fastfield::{AliveBitSet, FastFieldReader};
use crate::query::QueryParser;
use crate::schema::{
self, BytesOptions, Cardinality, Facet, FacetOptions, IndexRecordOption, TextFieldIndexing,
};
use crate::schema::{IntOptions, TextOptions};
use crate::DocAddress;
use crate::IndexSortByField;
use crate::Order;
use crate::{DocSet, IndexSettings, Postings, Term};
use futures::executor::block_on;
fn create_test_index_posting_list_issue(index_settings: Option<IndexSettings>) -> Index {
let mut schema_builder = schema::Schema::builder();
let int_options = IntOptions::default()
.set_fast(Cardinality::SingleValue)
.set_indexed();
let int_field = schema_builder.add_u64_field("intval", int_options);
let facet_field = schema_builder.add_facet_field("facet", FacetOptions::default());
let schema = schema_builder.build();
let mut index_builder = Index::builder().schema(schema);
if let Some(settings) = index_settings {
index_builder = index_builder.settings(settings);
}
let index = index_builder.create_in_ram().unwrap();
{
let mut index_writer = index.writer_for_tests().unwrap();
index_writer
.add_document(doc!(int_field=>3_u64, facet_field=> Facet::from("/crime")))
.unwrap();
index_writer
.add_document(doc!(int_field=>6_u64, facet_field=> Facet::from("/crime")))
.unwrap();
index_writer.commit().unwrap();
index_writer
.add_document(doc!(int_field=>5_u64, facet_field=> Facet::from("/fanta")))
.unwrap();
index_writer.commit().unwrap();
}
// Merging the segments
{
let segment_ids = index
.searchable_segment_ids()
.expect("Searchable segments failed.");
let mut index_writer = index.writer_for_tests().unwrap();
assert!(block_on(index_writer.merge(&segment_ids)).is_ok());
assert!(index_writer.wait_merging_threads().is_ok());
}
index
}
// force_disjunct_segment_sort_values forces the field, by which the index is sorted have disjunct
// ranges between segments, e.g. values in segment [1-3] [10 - 20] [50 - 500]
fn create_test_index(
index_settings: Option<IndexSettings>,
force_disjunct_segment_sort_values: bool,
) -> crate::Result<Index> {
let mut schema_builder = schema::Schema::builder();
let int_options = IntOptions::default()
.set_fast(Cardinality::SingleValue)
.set_stored()
.set_indexed();
let int_field = schema_builder.add_u64_field("intval", int_options);
let bytes_options = BytesOptions::default().set_fast().set_indexed();
let bytes_field = schema_builder.add_bytes_field("bytes", bytes_options);
let facet_field = schema_builder.add_facet_field("facet", FacetOptions::default());
let multi_numbers = schema_builder.add_u64_field(
"multi_numbers",
IntOptions::default().set_fast(Cardinality::MultiValues),
);
let text_field_options = TextOptions::default()
.set_indexing_options(
TextFieldIndexing::default()
.set_index_option(schema::IndexRecordOption::WithFreqsAndPositions),
)
.set_stored();
let text_field = schema_builder.add_text_field("text_field", text_field_options);
let schema = schema_builder.build();
let mut index_builder = Index::builder().schema(schema);
if let Some(settings) = index_settings {
index_builder = index_builder.settings(settings);
}
let index = index_builder.create_in_ram()?;
{
let mut index_writer = index.writer_for_tests()?;
// segment 1 - range 1-3
index_writer.add_document(doc!(int_field=>1_u64))?;
index_writer.add_document(
doc!(int_field=>3_u64, multi_numbers => 3_u64, multi_numbers => 4_u64, bytes_field => vec![1, 2, 3], text_field => "some text", facet_field=> Facet::from("/book/crime")),
)?;
index_writer.add_document(
doc!(int_field=>1_u64, text_field=> "deleteme", text_field => "ok text more text"),
)?;
index_writer.add_document(
doc!(int_field=>2_u64, multi_numbers => 2_u64, multi_numbers => 3_u64, text_field => "ok text more text"),
)?;
index_writer.commit()?;
// segment 2 - range 1-20 , with force_disjunct_segment_sort_values 10-20
index_writer.add_document(doc!(int_field=>20_u64, multi_numbers => 20_u64))?;
let in_val = if force_disjunct_segment_sort_values {
10_u64
} else {
1
};
index_writer.add_document(doc!(int_field=>in_val, text_field=> "deleteme" , text_field => "ok text more text", facet_field=> Facet::from("/book/crime")))?;
index_writer.commit()?;
// segment 3 - range 5-1000, with force_disjunct_segment_sort_values 50-1000
let int_vals = if force_disjunct_segment_sort_values {
[100_u64, 50]
} else {
[10, 5]
};
index_writer.add_document( // position of this doc after delete in desc sorting = [2], in disjunct case [1]
doc!(int_field=>int_vals[0], multi_numbers => 10_u64, multi_numbers => 11_u64, text_field=> "blubber", facet_field=> Facet::from("/book/fantasy")),
)?;
index_writer.add_document(doc!(int_field=>int_vals[1], text_field=> "deleteme"))?;
index_writer.add_document(
doc!(int_field=>1_000u64, multi_numbers => 1001_u64, multi_numbers => 1002_u64, bytes_field => vec![5, 5],text_field => "the biggest num")
)?;
index_writer.delete_term(Term::from_field_text(text_field, "deleteme"));
index_writer.commit()?;
}
// Merging the segments
{
let segment_ids = index.searchable_segment_ids()?;
let mut index_writer = index.writer_for_tests()?;
block_on(index_writer.merge(&segment_ids))?;
index_writer.wait_merging_threads()?;
}
Ok(index)
}
#[test]
fn test_merge_sorted_postinglist_sort_issue() {
create_test_index_posting_list_issue(Some(IndexSettings {
sort_by_field: Some(IndexSortByField {
field: "intval".to_string(),
order: Order::Desc,
}),
..Default::default()
}));
}
#[test]
fn test_merge_sorted_index_desc_not_disjunct() {
test_merge_sorted_index_desc_(false);
}
#[test]
fn test_merge_sorted_index_desc_disjunct() {
test_merge_sorted_index_desc_(true);
}
fn test_merge_sorted_index_desc_(force_disjunct_segment_sort_values: bool) {
let index = create_test_index(
Some(IndexSettings {
sort_by_field: Some(IndexSortByField {
field: "intval".to_string(),
order: Order::Desc,
}),
..Default::default()
}),
force_disjunct_segment_sort_values,
)
.unwrap();
let int_field = index.schema().get_field("intval").unwrap();
let reader = index.reader().unwrap();
let searcher = reader.searcher();
assert_eq!(searcher.segment_readers().len(), 1);
let segment_reader = searcher.segment_readers().last().unwrap();
let fast_fields = segment_reader.fast_fields();
let fast_field = fast_fields.u64(int_field).unwrap();
assert_eq!(fast_field.get(5u32), 1u64);
assert_eq!(fast_field.get(4u32), 2u64);
assert_eq!(fast_field.get(3u32), 3u64);
if force_disjunct_segment_sort_values {
assert_eq!(fast_field.get(2u32), 20u64);
assert_eq!(fast_field.get(1u32), 100u64);
} else {
assert_eq!(fast_field.get(2u32), 10u64);
assert_eq!(fast_field.get(1u32), 20u64);
}
assert_eq!(fast_field.get(0u32), 1_000u64);
// test new field norm mapping
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let fieldnorm_reader = segment_reader.get_fieldnorms_reader(my_text_field).unwrap();
assert_eq!(fieldnorm_reader.fieldnorm(0), 3); // the biggest num
if force_disjunct_segment_sort_values {
assert_eq!(fieldnorm_reader.fieldnorm(1), 1); // blubber
assert_eq!(fieldnorm_reader.fieldnorm(2), 0);
} else {
assert_eq!(fieldnorm_reader.fieldnorm(1), 0);
assert_eq!(fieldnorm_reader.fieldnorm(2), 1); // blubber
}
assert_eq!(fieldnorm_reader.fieldnorm(3), 2); // some text
assert_eq!(fieldnorm_reader.fieldnorm(5), 0);
}
let my_text_field = index.schema().get_field("text_field").unwrap();
let searcher = index.reader().unwrap().searcher();
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let do_search = |term: &str| {
let query = QueryParser::for_index(&index, vec![my_text_field])
.parse_query(term)
.unwrap();
let top_docs: Vec<(f32, DocAddress)> =
searcher.search(&query, &TopDocs::with_limit(3)).unwrap();
top_docs.iter().map(|el| el.1.doc_id).collect::<Vec<_>>()
};
assert_eq!(do_search("some"), vec![3]);
if force_disjunct_segment_sort_values {
assert_eq!(do_search("blubber"), vec![1]);
} else {
assert_eq!(do_search("blubber"), vec![2]);
}
assert_eq!(do_search("biggest"), vec![0]);
}
// postings file
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let term_a = Term::from_field_text(my_text_field, "text");
let inverted_index = segment_reader.inverted_index(my_text_field).unwrap();
let mut postings = inverted_index
.read_postings(&term_a, IndexRecordOption::WithFreqsAndPositions)
.unwrap()
.unwrap();
assert_eq!(postings.doc_freq(), 2);
let fallback_bitset = AliveBitSet::for_test_from_deleted_docs(&[0], 100);
assert_eq!(
postings.doc_freq_given_deletes(
segment_reader.alive_bitset().unwrap_or(&fallback_bitset)
),
2
);
assert_eq!(postings.term_freq(), 1);
let mut output = vec![];
postings.positions(&mut output);
assert_eq!(output, vec![1]);
postings.advance();
assert_eq!(postings.term_freq(), 2);
postings.positions(&mut output);
assert_eq!(output, vec![1, 3]);
}
// access doc store
{
let blubber_pos = if force_disjunct_segment_sort_values {
1
} else {
2
};
let doc = searcher.doc(DocAddress::new(0, blubber_pos)).unwrap();
assert_eq!(
doc.get_first(my_text_field).unwrap().text(),
Some("blubber")
);
let doc = searcher.doc(DocAddress::new(0, 0)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(1000));
}
}
#[test]
fn test_merge_unsorted_index() {
let index = create_test_index(
Some(IndexSettings {
..Default::default()
}),
false,
)
.unwrap();
let reader = index.reader().unwrap();
let searcher = reader.searcher();
assert_eq!(searcher.segment_readers().len(), 1);
let segment_reader = searcher.segment_readers().last().unwrap();
let searcher = index.reader().unwrap().searcher();
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let do_search = |term: &str| {
let query = QueryParser::for_index(&index, vec![my_text_field])
.parse_query(term)
.unwrap();
let top_docs: Vec<(f32, DocAddress)> =
searcher.search(&query, &TopDocs::with_limit(3)).unwrap();
top_docs.iter().map(|el| el.1.doc_id).collect::<Vec<_>>()
};
assert_eq!(do_search("some"), vec![1]);
assert_eq!(do_search("blubber"), vec![3]);
assert_eq!(do_search("biggest"), vec![4]);
}
// postings file
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let term_a = Term::from_field_text(my_text_field, "text");
let inverted_index = segment_reader.inverted_index(my_text_field).unwrap();
let mut postings = inverted_index
.read_postings(&term_a, IndexRecordOption::WithFreqsAndPositions)
.unwrap()
.unwrap();
assert_eq!(postings.doc_freq(), 2);
let fallback_bitset = AliveBitSet::for_test_from_deleted_docs(&[0], 100);
assert_eq!(
postings.doc_freq_given_deletes(
segment_reader.alive_bitset().unwrap_or(&fallback_bitset)
),
2
);
assert_eq!(postings.term_freq(), 1);
let mut output = vec![];
postings.positions(&mut output);
assert_eq!(output, vec![1]);
postings.advance();
assert_eq!(postings.term_freq(), 2);
postings.positions(&mut output);
assert_eq!(output, vec![1, 3]);
}
}
#[test]
fn test_merge_sorted_index_asc() {
let index = create_test_index(
Some(IndexSettings {
sort_by_field: Some(IndexSortByField {
field: "intval".to_string(),
order: Order::Asc,
}),
..Default::default()
}),
false,
)
.unwrap();
let int_field = index.schema().get_field("intval").unwrap();
let multi_numbers = index.schema().get_field("multi_numbers").unwrap();
let bytes_field = index.schema().get_field("bytes").unwrap();
let reader = index.reader().unwrap();
let searcher = reader.searcher();
assert_eq!(searcher.segment_readers().len(), 1);
let segment_reader = searcher.segment_readers().last().unwrap();
let fast_fields = segment_reader.fast_fields();
let fast_field = fast_fields.u64(int_field).unwrap();
assert_eq!(fast_field.get(0u32), 1u64);
assert_eq!(fast_field.get(1u32), 2u64);
assert_eq!(fast_field.get(2u32), 3u64);
assert_eq!(fast_field.get(3u32), 10u64);
assert_eq!(fast_field.get(4u32), 20u64);
assert_eq!(fast_field.get(5u32), 1_000u64);
let get_vals = |fast_field: &MultiValuedFastFieldReader<u64>, doc_id: u32| -> Vec<u64> {
let mut vals = vec![];
fast_field.get_vals(doc_id, &mut vals);
vals
};
let fast_fields = segment_reader.fast_fields();
let fast_field = fast_fields.u64s(multi_numbers).unwrap();
assert_eq!(&get_vals(&fast_field, 0), &[] as &[u64]);
assert_eq!(&get_vals(&fast_field, 1), &[2, 3]);
assert_eq!(&get_vals(&fast_field, 2), &[3, 4]);
assert_eq!(&get_vals(&fast_field, 3), &[10, 11]);
assert_eq!(&get_vals(&fast_field, 4), &[20]);
assert_eq!(&get_vals(&fast_field, 5), &[1001, 1002]);
let fast_field = fast_fields.bytes(bytes_field).unwrap();
assert_eq!(fast_field.get_bytes(0), &[] as &[u8]);
assert_eq!(fast_field.get_bytes(2), &[1, 2, 3]);
assert_eq!(fast_field.get_bytes(5), &[5, 5]);
// test new field norm mapping
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let fieldnorm_reader = segment_reader.get_fieldnorms_reader(my_text_field).unwrap();
assert_eq!(fieldnorm_reader.fieldnorm(0), 0);
assert_eq!(fieldnorm_reader.fieldnorm(1), 4);
assert_eq!(fieldnorm_reader.fieldnorm(2), 2); // some text
assert_eq!(fieldnorm_reader.fieldnorm(3), 1);
assert_eq!(fieldnorm_reader.fieldnorm(5), 3); // the biggest num
}
let searcher = index.reader().unwrap().searcher();
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let do_search = |term: &str| {
let query = QueryParser::for_index(&index, vec![my_text_field])
.parse_query(term)
.unwrap();
let top_docs: Vec<(f32, DocAddress)> =
searcher.search(&query, &TopDocs::with_limit(3)).unwrap();
top_docs.iter().map(|el| el.1.doc_id).collect::<Vec<_>>()
};
assert_eq!(do_search("some"), vec![2]);
assert_eq!(do_search("blubber"), vec![3]);
assert_eq!(do_search("biggest"), vec![5]);
}
// postings file
{
let my_text_field = index.schema().get_field("text_field").unwrap();
let term_a = Term::from_field_text(my_text_field, "text");
let inverted_index = segment_reader.inverted_index(my_text_field).unwrap();
let mut postings = inverted_index
.read_postings(&term_a, IndexRecordOption::WithFreqsAndPositions)
.unwrap()
.unwrap();
assert_eq!(postings.doc_freq(), 2);
let fallback_bitset = AliveBitSet::for_test_from_deleted_docs(&[0], 100);
assert_eq!(
postings.doc_freq_given_deletes(
segment_reader.alive_bitset().unwrap_or(&fallback_bitset)
),
2
);
let mut output = vec![];
postings.positions(&mut output);
assert_eq!(output, vec![1, 3]);
postings.advance();
postings.positions(&mut output);
assert_eq!(output, vec![1]);
}
// access doc store
{
let doc = searcher.doc(DocAddress::new(0, 0)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(1));
let doc = searcher.doc(DocAddress::new(0, 1)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(2));
let doc = searcher.doc(DocAddress::new(0, 2)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(3));
let doc = searcher.doc(DocAddress::new(0, 3)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(10));
let doc = searcher.doc(DocAddress::new(0, 4)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(20));
let doc = searcher.doc(DocAddress::new(0, 5)).unwrap();
assert_eq!(doc.get_first(int_field).unwrap().u64_value(), Some(1_000));
}
}
}
#[cfg(all(test, feature = "unstable"))]
mod bench_sorted_index_merge {
use crate::core::Index;
//use cratedoc_id, readerdoc_id_mappinglet vals = reader.fate::schema;
use crate::fastfield::DynamicFastFieldReader;
use crate::fastfield::FastFieldReader;
use crate::indexer::merger::IndexMerger;
use crate::schema::Cardinality;
use crate::schema::Document;
use crate::schema::IntOptions;
use crate::schema::Schema;
use crate::IndexSettings;
use crate::IndexSortByField;
use crate::IndexWriter;
use crate::Order;
use test::{self, Bencher};
fn create_index(sort_by_field: Option<IndexSortByField>) -> Index {
let mut schema_builder = Schema::builder();
let int_options = IntOptions::default()
.set_fast(Cardinality::SingleValue)
.set_indexed();
let int_field = schema_builder.add_u64_field("intval", int_options);
let schema = schema_builder.build();
let index_builder = Index::builder().schema(schema).settings(IndexSettings {
sort_by_field,
..Default::default()
});
let index = index_builder.create_in_ram().unwrap();
{
let mut index_writer = index.writer_for_tests().unwrap();
let index_doc = |index_writer: &mut IndexWriter, val: u64| {
let mut doc = Document::default();
doc.add_u64(int_field, val);
index_writer.add_document(doc);
};
// 3 segments with 10_000 values in the fast fields
for _ in 0..3 {
index_doc(&mut index_writer, 5000); // fix to make it unordered
for i in 0..10_000 {
index_doc(&mut index_writer, i);
}
index_writer.commit().unwrap();
}
}
index
}
#[bench]
fn create_sorted_index_walk_overkmerge_on_merge_fastfield(
b: &mut Bencher,
) -> crate::Result<()> {
let sort_by_field = IndexSortByField {
field: "intval".to_string(),
order: Order::Desc,
};
let index = create_index(Some(sort_by_field.clone()));
let field = index.schema().get_field("intval").unwrap();
let segments = index.searchable_segments().unwrap();
let merger: IndexMerger =
IndexMerger::open(index.schema(), index.settings().clone(), &segments[..])?;
let doc_id_mapping = merger.generate_doc_id_mapping(&sort_by_field).unwrap();
b.iter(|| {
let sorted_doc_ids = doc_id_mapping.iter().map(|(doc_id, ordinal)|{
let reader = &merger.readers[*ordinal as usize];
let u64_reader: DynamicFastFieldReader<u64> = reader
.fast_fields()
.typed_fast_field_reader(field)
.expect("Failed to find a reader for single fast field. This is a tantivy bug and it should never happen.");
(doc_id, reader, u64_reader)
});
// add values in order of the new doc_ids
let mut val = 0;
for (doc_id, _reader, field_reader) in sorted_doc_ids {
val = field_reader.get(*doc_id);
}
val
});
Ok(())
}
#[bench]
fn create_sorted_index_create_doc_id_mapping(b: &mut Bencher) -> crate::Result<()> {
let sort_by_field = IndexSortByField {
field: "intval".to_string(),
order: Order::Desc,
};
let index = create_index(Some(sort_by_field.clone()));
//let field = index.schema().get_field("intval").unwrap();
let segments = index.searchable_segments().unwrap();
let merger: IndexMerger =
IndexMerger::open(index.schema(), index.settings().clone(), &segments[..])?;
b.iter(|| {
merger.generate_doc_id_mapping(&sort_by_field).unwrap();
});
Ok(())
}
}